87792271551 has 32 divisors (see below), whose sum is σ = 131087013120. Its totient is φ = 58068328032.

The previous prime is 87792271547. The next prime is 87792271613. The reversal of 87792271551 is 15517229778.

87792271551 is a `hidden beast` number, since 87 + 7 + 9 + 2 + 2 + 7 + 1 + 551 = 666.

It is not a de Polignac number, because 87792271551 - 2² = 87792271547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87792271051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2880076 + ... + 2910398.

It is an arithmetic number, because the mean of its divisors is an integer number (4096469160).

Almost surely, 2^87792271551 is an apocalyptic number.

87792271551 is a deficient number, since it is larger than the sum of its proper divisors (43294741569).

87792271551 is a wasteful number, since it uses less digits than its factorization.

87792271551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31172 (or 31166 counting only the distinct ones).

The product of its digits is 2469600, while the sum is 54.

The spelling of 87792271551 in words is "eighty-seven billion, seven hundred ninety-two million, two hundred seventy-one thousand, five hundred fifty-one".